As I recall you break the normal update link in the repository, but you can update to latest as they come out.

I don't know if this is something the development team would recommend and I personally would not do so without some input from them .... well I may play with another test box javascript:emoticon(':wink:'), because now I'm curious.

It's okay - but as always when you don't know anything about a site - be cautious - some unwanted code could enter your system as you do the update as root
And I don't know if it breaks the normal update as newW2 mentioned